Re: [Xen-devel] [Xen-users] pvgrub: Error 9: Unknown boot failure

[Sven Köhler <sven.koehler@xxxxxxxxx>]

Am 28.09.2016 um 05:50 schrieb Juergen Gross:
> On 28/09/16 01:33, Sven Köhler wrote:
>> Am 27.09.2016 um 14:52 schrieb Juergen Gross:
>>> On 27/09/16 14:09, Sven Köhler wrote:
>>>> Am 27.09.2016 um 14:02 schrieb Juergen Gross:
>>>>> On 27/09/16 13:13, Sven Köhler wrote:
>>>>>> Am 27.09.2016 um 07:31 schrieb Juergen Gross:
>>>>>>> On 27/09/16 00:48, Sven Köhler wrote:
>>>>>>>> Am 26.09.2016 um 07:43 schrieb Juergen Gross:
>>>>>>>>> On 25/09/16 18:04, Sven Köhler wrote:
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I'm experiencing the bug below which was discussed on xen-devel 
>>>>>>>>>> December
>>>>>>>>>> last year buy Ian and Juergen. I'm using xen-pvgrub-4.7.0 on Gentoo.
>>>>>>>>>>
>>>>>>>>>> The bug only seems to occur with the last domU booted on my machine.
>>>>>>>>>> Where do I find a patch that fixes that?
>>>>>>>>>
>>>>>>>>> The issue back in December was fixed by commit
>>>>>>>>> c8eb0ec277ae387e78d685523e0fee633e46f046 which is included in Xen 4.7.
>>>>>>>>> Either gentoo didn't update to the official Xen 4.7 release (including
>>>>>>>>> pvgrub) or you are seeing a new issue.
>>>>>>>>
>>>>>>>> From the looks of it, the Gentoo package is using the grub from the
>>>>>>>> xen-4.7.0 tarball.
>>>>>>>>
>>>>>>>> I downgraded to pvgrub 4.6.3 and the problem went away.
>>>>>>>>
>>>>>>>> So I assume I'm seeing a new issue. How do I debug it?
>>>>>>>
>>>>>>> Interesting. Just tested it on upstream Xen and saw the same problem
>>>>>>> with a rather old guest kernel (3.0 based, xen flavor), while a newer
>>>>>>> kernel (4.1, pvops) is working.
>>>>>>>
>>>>>>> Can you give me some more details about the kernel you are trying to
>>>>>>> boot?
>>>>>>
>>>>>> It's an unmodified 4.4.21 kernel which I compile by hand. The config is
>>>>>> attached. Does that help?
>>>>>
>>>>> Not really. OTOH I think I don't need more help, as I've found a problem
>>>>> in pvgrub. I have a patch which seems to correct the issue. Are you fine
>>>>> with me adding you as the original reporter of the problem in the patch?
>>>>
>>>> Yes, I'm fine with adding me as the reporter.
>>>> Do you want me to test the patch first?
>>>
>>> Sure. The attached patch is for Xen upstream, but I think it should
>>> apply to Xen 4.7, too.
>>
>> This patch solved the issue for me. My domU boots fine again after
>> recompiling pvgrub with the patch applied.
>>
>> Thanks!
> 
> Thank you for the test!

It seems this patch was not included in 4.7.1. That's a shame, cause I
ran into the same issue after upgrading to 4.7.1.


Regards,
  Sven

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel